Add header for forward compatibility

Change-Id: I6e3da852d50fc14cfb6fb50f7dd867f37daea19d

Author: ChrisCraik

include/utils/Trace.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_TRACE_H
+#define ANDROID_TRACE_H
+
+#define ATRACE_TAG_NEVER    0           // The "never" tag is never enabled.
+#define ATRACE_TAG_ALWAYS   (1<<0)      // The "always" tag is always enabled.
+#define ATRACE_TAG_GRAPHICS (1<<1)
+#define ATRACE_TAG_INPUT    (1<<2)
+#define ATRACE_TAG_VIEW     (1<<3)
+#define ATRACE_TAG_WEBVIEW  (1<<4)
+
+#define ATRACE_CALL()
+
+#define ATRACE_INT(name, value)
+
+#define ATRACE_ENABLED() false
+
+namespace android {
+
+class ScopedTrace {
+
+public:
+    inline ScopedTrace(uint64_t tag, const char* name) {}
+};
+
+}; // namespace android
+
+#endif // ANDROID_TRACE_H